Controllable synthesis of tricalcium phosphate (TCP) polymorphs by wet precipitation: Effect of washing procedure

Lauryna Sinusaite, Inga Grigoraviciute-Puroniene, Anton Popov, Kunio Ishikawa, Aivaras Kareiva, Aleksej Zarkov

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In the present work, effect of processing conditions on the synthesis of tricalcium phosphate (TCP) polymorphs was investigated. Pure α- and β-TCP polymorphs were prepared by wet precipitation method at almost identical thermal conditions. It was shown that formation of the compound with desired crystalline structure can be achieved by applying a washing procedure with a certain solvent to as-prepared calcium phosphate precipitates. Effect of water, acetone, acetonitrile, ethanol and isopropanol on the crystallinity and crystal structure of the as-prepared and annealed powders was studied. It was demonstrated that type of the washing liquid strongly affects crystalline or amorphous nature of the as-prepared precipitates and formation of different TCP polymorphs after thermal treatment. Washing of the as-prepared precipitates with water and acetone leads to the formation of β-TCP, while washing with acetonitrile and alcohols leads to the crystallization of α-TCP. The thermal behavior of dried precipitates was investigated by thermogravimetric analysis (TGA). The crystallinity, crystal structure and structural changes were evaluated by X-ray powder diffraction (XRD), Fourier-transform infrared (FTIR) and Raman spectroscopy. Scanning electron microscopy (SEM) was used for the characterization of morphological features of the synthesized products.

Original languageEnglish
Pages (from-to)12423-12428
Number of pages6
JournalCeramics International
Volume45
Issue number9
DOIs
Publication statusPublished - Jun 15 2019

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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